Topoisomerases are enzymes that regulate the overwinding or underwinding of DNA. The winding problem of DNA arises due to the intertwined nature of its double-helical structure. Topoisomerases are isomerase enzymes that act on the topology of DNA. Type I topoisomerase cuts one strand of a DNA double helix, relaxation occurs, and then the cut strand is reannealed. Type I topoisomerases are subdivided into two subclasses: type IA topoisomerases, which share many structural and mechanistic features with the type II topoisomerases, and type IB topoisomerases, which utilize a controlled rotary mechanism. Type II topoisomerase cuts both strands of one DNA double helix, pass another unbroken DNA helix through it, and then reanneal the cut strands. This class is also split into two subclasses: type IIA and type IIB topoisomerases, which possess similar structure and mechanisms.
| Cat. No. | Product Name | CAS No. | Purity | Chemical Structure |
|---|---|---|---|---|
| KM10986 |
Topotecan
Topotecan (SKF 104864A; NSC 609669) 是拓扑异构酶I抑制剂。 |
123948-87-8 | 98% |
|
| KM6255 |
Topotecan Hydrochloride
Topotecan Hydrochloride (SKF 104864A Hydrochloride) 是具有抗癌活性的 拓扑异构酶I 抑制剂。 |
119413-54-6 | 98% |
|
| KE7335 | Topovale | 500214-53-9 | ≥95% |
|
| KM18758 |
Trovafloxacin
Trovafloxacin 是一种广谱喹诺酮类抗生素，对革兰氏阳性，革兰氏阴性和厌氧菌具有有效的活性。Trovafloxacin 可阻断 DNA 促旋酶 (DNA gyrase) 和拓扑异构酶 IV (topoisomerase IV) 的活性。Trovafloxacin 也是一种有效的，选择性的，口服活性的 Pannexin 1 通道 (PANX1) 抑制剂，对 PANX1 内向电流的 IC50 为 4 μM。Trovafloxacin 不抑制 connexin 43 gap junction 或 PANX2。Trovafloxacin 通过抑制 PANX1 导致凋亡细胞碎片失调。 |
147059-72-1 | 98% |
|
| KM2514 |
Trovafloxacin mesylate
Trovafloxacin mesylate 是一种广谱喹诺酮类抗生素，对革兰氏阳性，革兰氏阴性和厌氧菌具有有效的活性。Trovafloxacin mesylate 可阻断 DNA 促旋酶 (DNA gyrase) 和拓扑异构酶 IV (topoisomerase IV) 的活性。Trovafloxacin mesylate 也是一种有效的，选择性的，口服活性的 Pannexin 1 通道 (PANX1) 抑制剂，对 PANX1 内向电流的 IC50 为 4 μM。Trovafloxacin mesylate 不抑制连接蛋白 43 间隙连接或 PANX2。Trovafloxacin mesylate 通过抑制 PANX1 导致凋亡细胞碎片失调。 |
147059-75-4 | 98% |
|
| KM10321 |
Trovafloxacin-d4 mesylate
Trovafloxacin-d4 mesylate 是 Trovafloxacin mesylate 的氘代物。Trovafloxacin mesylate 是一种广谱喹诺酮类抗生素，对革兰氏阳性，革兰氏阴性和厌氧菌具有有效的活性。Trovafloxacin mesylate 可阻断 DNA 促旋酶 (DNA gyrase) 和拓扑异构酶 IV (topoisomerase IV) 的活性。Trovafloxacin mesylate 也是一种有效的，选择性的，口服活性的 Pannexin 1 通道 (PANX1) 抑制剂，对 PANX1 内向电流的 IC50 为 4 μM。Trovafloxacin mesylate 不抑制连接蛋白 43 间隙连接或 PANX2。Trovafloxacin mesylate 通过抑制 PANX1 导致凋亡细胞碎片失调。 |
1346601-60-2 | 98% |
|
| KE4662 | Tryprostatin A | 171864-80-5 | ≥95% |
|
| KM13174 |
Voreloxin Hydrochloride
Voreloxin Hydrochloride 是一种新创的拓扑异构酶 II (topoisomerase II) 抑制剂，能够诱导 DNA 双链断裂，阻滞 G2 期，最终细胞凋亡。 |
175519-16-1 | 98% |
|
| KE7337 | WAY-323966 | 451515-89-2 | ≥95% |
|
| KM7241 |
Zabofloxacin
Zabofloxacin (DW-224a Free base) 是一种有效的、对细菌 II 型和 IV 型拓扑异构酶 (type II and IV topoisomerases) 有效的抑制剂。Zabofloxacin 对革兰氏阳性致病菌包括金黄色葡萄球菌、化脓性链球菌和肺炎链球菌有良好的抗菌活性。Zabofloxacin 是一种新型氟萘啶酮喹诺酮类抗生素，被认为是研究喹诺酮易感 (QSSP) 和喹诺酮耐药淋病 (QRSP) 的替代试剂。 |
219680-11-2 | 98% |
|
| KM9848 |
Zabofloxacin hydrochloride
Zabofloxacin hydrochloride (DW-224a) 是一种有效的、对细菌 II 型和 IV 型拓扑异构酶 (type II and IV topoisomerases) 有效的抑制剂。Zabofloxacin hydrochloride 对革兰氏阳性致病菌包括金黄色葡萄球菌、化脓性链球菌和肺炎链球菌有良好的抗菌活性。Zabofloxacin hydrochloride 是一种新型氟萘啶酮喹诺酮类抗生素，被认为是研究喹诺酮易感 (QSSP) 和喹诺酮耐药淋病 (QRSP) 的替代试剂。 |
623574-00-5 | 98% |
|
| KM4134 |
β-Lapachone
β-Lapachone (ARQ-501;NSC-26326) 是一种天然的萘醌类化合物，是拓扑异构酶 I (topoisomerase I) 抑制剂，通过抑制细胞周期进程来诱导细胞凋亡。 |
4707-32-8 | 98% |
|
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